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Finding the Fourth Proportional to 653.97, 902.75 and 496.63

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Solution

The fourth proportional to 653.97, 902.75 and 496.63 is: 685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.97 : 902.75 = 496.63 : x
  2. Step 2: Convert to fraction form
    653.97/902.75 = 496.63/x
  3. Step 3: Cross multiply
    653.97x = 902.75 × 496.63
  4. Step 4: Simplify right side
    653.97x = 448,331.38
  5. Step 5: Solve for x
    x = 448,331.38/653.97
  6. Step 6: Final answer
    x = 685.55

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.